Answer:
Our Biological clocks drive our circadian rhythms. The internal clocks are groupings of interacting molecules in cells throughout the body. A "master clock" in the brain coordinates all the body clocks so that hey are in synch.
Explanation:
It would be a compound light microscope due to the fact that it can view specimens dead or alive and have at least 40x to 1000x zoom
Answer - Speciation
Reasoning - Pretty much what has happen was the two species has evolved over the course of evolution if you want to put it that way why the are incapable of breeding.
Modelling uncertainty limits the accuracy of model predictions. Coral bleaching occurs because the seawater temperature is increasing. This is primarily because of climate change. Predicting climate change in the future is highly uncertain, as it is basically long-term weather prediction that depends on certain carbon emission scenarios. It is well known that normal weather prediction becomes inaccurate after around 14 days, so predicting long-term climate in the next 100 years or more is highly uncertain. There are a multitude of global circulation models (GCMs) that have been developed by different countries, all of which tend to predict widely different climate. Added to this uncertainty is that GCMs work on large spatial scales, and a technique called downscaling is used to predict more localised climate change. Since there are several ways of downscaling, this adds an additional level of uncertainty. Finally, we cannot be sure what carbon emissions will be released to the atmosphere in the future that will drive climate change, another source of uncertainty.